云南水力发电2024，Vol.40Issue(6)：144-149,6.DOI:10.3969/j.issn.1006-3951.2024.06.047
库水骤升条件下特高心墙堆石坝渗流及坝坡稳定性分析
Analysis on Seepage and Slope Stability of Super-high Core Wall Rockfill Dam under Sudden Rise of Reservoir Water
摘要
Abstract
To analyze the impact of sudden rise in reservoir water on the seepage characteristics and slope stability of a super-high core wall rockfill dam,this paper takes the actual situation of a certain super-high core wall rockfill dam as an example and establishes a finite element analysis model.It adopts the saturated unsaturated unstable seepage theory to numerically simulate the seepage field during the sudden rise stage of reservoir water,and combines the unstable seepage field with the limit equilibrium method to analyze the stability of the dam slope.The research results indicate that during the sudden rise of reservoir water,the change in the infiltration line inside the core wall shows a significant lag compared to the change in reservoir water level.The infiltration line shows a"concave"shape,and the faster the rate of water level sudden rise,the greater the degree of downward bending.During the sudden rise of reservoir water,the unstable seepage equipotential line inside the core wall shifts towards the upstream as a whole.The sudden rise of reservoir water has a favorable impact on the stability of upstream dam slopes,while downstream dam slopes remain basically unchanged due to the good impermeability of the core wall.关键词
特高心墙堆石坝/库水骤升/渗流/坝坡稳定/有限元分析Key words
super-high core wall rockfill dam/sudden rise of reservoir water/seepage/dam slope stability/finite element analysis分类
建筑与水利引用本文复制引用
刘得潭..库水骤升条件下特高心墙堆石坝渗流及坝坡稳定性分析[J].云南水力发电,2024,40(6):144-149,6.基金项目
国家自然科学基金面上项目(52179130) （52179130）
